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Eco-bio-social determinants of dengue vector breeding: a multicountry study in urban and periurban Asia

Arunachalam, Natarajan, Tana, Susilowati, Espino, Fe, Kittayapong, Pattamaporn, Abeyewickreme, Wimal, Wai, Khin Thet, Tyagi, Brij Kishore, Kroeger, Axel, Sommerfeld, Johannes and Petzold, Max (2010) 'Eco-bio-social determinants of dengue vector breeding: a multicountry study in urban and periurban Asia'. Bulletin of the World Health Organization, Vol 88, Issue 3, pp. 173-184.

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Abstract

Objective To study dengue vector breeding patterns under a variety of conditions in public and private spaces; to explore the ecological, biological and social (eco-bio-social) factors involved in vector breeding and viral transmission, and to define the main implications for
vector control.
Methods In each of six Asian cities or periurban areas, a team randomly selected urban clusters for conducting standardized household surveys, neighbourhood background surveys and entomological surveys. They collected information on vector breeding sites, people’s knowledge, attitudes and practices surrounding dengue, and the characteristics of the study areas. All premises were inspected; larval indices were used to quantify vector breeding sites, and pupal counts were used to identify productive water container types and as a proxy measure for adult vector abundance.
Findings The most productive vector breeding sites were outdoor water containers, particularly if uncovered, beneath shrubbery and
unused for at least one week. Peridomestic and intradomestic areas were much more important for pupal production than commercial
and public spaces other than schools and religious facilities. A complex but non-significant association was found between water
supply and pupal counts, and lack of waste disposal services was associated with higher vector abundance in only one site. Greater
knowledge about dengue and its transmission was associated with lower mosquito breeding and production. Vector control measures (mainly larviciding in one site) substantially reduced larval and pupal counts and “pushed” mosquito breeding to alternative containers.
Conclusion Vector breeding and the production of adult Aedes aegypti are influenced by a complex interplay of factors. Thus, to achieve effective vector management, a public health response beyond routine larviciding or focal spraying is essential.

Item Type: Article
Subjects: QX Parasitology > Insects. Other Parasites > QX 510 Mosquitoes
QX Parasitology > Insects. Other Parasites > QX 525 Aedes
QX Parasitology > Insects. Other Parasites > QX 600 Insect control. Tick control
QX Parasitology > Insects. Other Parasites > QX 650 Insect vectors
WA Public Health > Preventive Medicine > WA 110 Prevention and control of communicable diseases. Transmission of infectious diseases
WC Communicable Diseases > Virus Diseases > Infectious Mononucleosis. Arbovirus Infections > WC 528 Dengue
WC Communicable Diseases > Tropical and Parasitic Diseases > WC 765 Prevention and control
Faculty: Department: Groups (2002 - 2012) > International Health Group
Digital Object Identifer (DOI): https://doi.org/10.2471/BLT.09.067892
Depositing User: Rachel Dominguez
Date Deposited: 20 Feb 2013 12:49
Last Modified: 06 Feb 2018 13:06
URI: https://archive.lstmed.ac.uk/id/eprint/3312

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